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Abdullazade S, Behrens HM, Krüger S, Haag J, Röcken C. MDM2 amplification is rare in gastric cancer. Virchows Arch 2023; 483:795-807. [PMID: 37821635 DOI: 10.1007/s00428-023-03674-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/21/2023] [Accepted: 10/02/2023] [Indexed: 10/13/2023]
Abstract
The MDM2 proto-oncogene (MDM2) is a primary negative regulator of p53. The latter is frequently mutated in gastric cancer (GC). In the present study, we aimed to validate gene amplification, protein expression, and the putative tumor biological function of MDM2 in a well-characterized Western GC cohort. MDM2 amplification and protein expression were studied in a cohort of 327 GCs by fluorescence in situ hybridization (FISH) and immunohistochemistry. Gene amplification and protein expression were correlated with diverse clinicopathological patient characteristics including patient outcome. Immunohistochemically, 97 GCs (29.7%) were categorized as MDM2 positive and 230 GCs (70.3%) as negative. An amplification of MDM2 was found in 11 (3.4%) cases without evidence of intratumoral heterogeneity. Nine of these eleven (81.8%) cases showed MDM2 protein expression. MDM2 amplification correlated significantly with MDM2 protein expression (p < 0.001). On a case-by-case analysis, MDM2-amplified cases showed varied histological phenotypes and were most commonly microsatellite stable; EBV, HER2, and MET negative; and FGFR2 positive. A single case harbored both, MDM2 amplification and TP53 mutation. MDM2 amplification and MDM2 expression, respectively, did not correlate with overall or tumor-specific survival. Our targeted analysis of MDM2 in a well-characterized cohort of GC patients showed that MDM2 amplification is rare, of no specific histological phenotype, and may not be always mutually exclusive with TP53 mutations. Given the low number of cases, currently, no diagnostic or therapeutic recommendation related to MDM2 amplification can be given for GC of Western origin.
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Affiliation(s)
- Samir Abdullazade
- Dept. of Pathology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Arnold-Heller-Str. 3, Haus U33, D-24105, Kiel, Germany
| | - Hans-Michael Behrens
- Dept. of Pathology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Arnold-Heller-Str. 3, Haus U33, D-24105, Kiel, Germany
| | - Sandra Krüger
- Dept. of Pathology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Arnold-Heller-Str. 3, Haus U33, D-24105, Kiel, Germany
| | - Jochen Haag
- Dept. of Pathology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Arnold-Heller-Str. 3, Haus U33, D-24105, Kiel, Germany
| | - Christoph Röcken
- Dept. of Pathology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Arnold-Heller-Str. 3, Haus U33, D-24105, Kiel, Germany.
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Demirci U, Orenay-Boyacioglu S, Kasap E, Gerçeker E, Bilgiç F, Yüceyar H, Yildirim H, Baykan AR, Ellidokuz EB, Korkmaz M. Overexpressions of RHOA, CSNK1A1, DVL2, FZD8, and LRP5 genes enhance gastric cancer development in the presence of Helicobacter pylori. Arab J Gastroenterol 2023:S1687-1979(23)00005-9. [PMID: 36720664 DOI: 10.1016/j.ajg.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 11/06/2022] [Accepted: 01/03/2023] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND STUDY AIMS Intestinal metaplasia (IM), and Helicobacter pylori (HP) infection can be shown as risk factors in the development of gastric cancer (GC). WNT signaling pathway plays a critical role in carcinogenesis. However, the literature studies are limited on the significance of this pathway for the transition from IM to GC. PATIENTS AND METHODS We aimed to investigate the importance of the genes of WNT signaling pathways diagnostic and prognostic markers in the presence and absence of HP in conversion from IM to GC. 104 patients, (GC group n = 35, IM group n = 45, control group n = 25) were included in this case-control study. Expression of genes in WNT signalling were searched in study groups with qRT-PCR array and qRT-PCR method. Data were analysed using PCR array data analysis software. RESULTS Statistically significant overexpression of RHOA, CSNK1A1, DVL2, FZD8 and LRP5 genes was detected in the GC and IM groups compared to the control group (p < 0.05). Statistically significant overexpression of RHOA, CSNK1A1, DVL2, FZD8 and LRP5 genes was observed in patients with metastatic GC compared to patients with GC without metastasis (p < 0.05). It was found that the RHOA, CSNK1A1, DVL2, FZD8 and LRP5 genes were statistically significantly over-expressed in diffuse GC patients compared to non-diffuse GC patients (p < 0.05). Statistically significant overexpression of RHOA, CSNK1A1, DVL2, FZD8 and LRP5 genes was detected in HP positive IM patients compared to HP negative IM patients (p < 0.05). CONCLUSION Overexpression of RHOA, CSNK1A1, DVL2, FZD8 and LRP5 genes in IM may suggest that these genes are important markers in the development of IM and inflammation with HP. In addition, these genes are linked to tumor burden in the GC group. Consequently, we can conclude that these genes are poor prognosis biomarkers for GC and have the potential to be used as markers for future treatment monitoring.
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Affiliation(s)
- Ufuk Demirci
- Department of Internal Medicine, Medical Faculty, Manisa Celal Bayar University, Manisa Turkey.
| | - Seda Orenay-Boyacioglu
- Department of Medical Genetics, Medical Faculty, Aydın Adnan Menderes University, Aydın, Turkey
| | - Elmas Kasap
- Department of Gastroenterology, Medical Faculty, Manisa Celal Bayar University, Manisa Turkey
| | - Emre Gerçeker
- Department of Gastroenterology, Gazi Hospital, Izmir Turkey
| | - Fahri Bilgiç
- Department of Internal Medicine, Medical Faculty, Manisa Celal Bayar University, Manisa Turkey
| | - Hakan Yüceyar
- Department of Gastroenterology, Medical Faculty, Manisa Celal Bayar University, Manisa Turkey
| | - Hatice Yildirim
- Department of Medical Biology, Medical Faculty, Manisa Celal Bayar University, Manisa Turkey
| | - Ahmed Ramiz Baykan
- Department of Gastroenterology, Erzurum Education and Research Hospital, Erzurum Turkey
| | - Ender Berat Ellidokuz
- Department of Gastroenterology, Medical Faculty, Dokuz Eylul University, Izmir Turkey
| | - Mehmet Korkmaz
- Department of Medical Biology, Medical Faculty, Manisa Celal Bayar University, Manisa Turkey
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Naderi M, Rahmani Cherati M, Mohammadian A, Baghery Bidhendy M, Ghiasvand S, Zare Marzouni H, Aryan H, Jangholi E, Javidi MA. Hypericin Induces Apoptosis in AGS Cell Line with No Significant Effect on Normal Cells. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2021; 19:349-357. [PMID: 33680035 PMCID: PMC7758000 DOI: 10.22037/ijpr.2019.14904.12735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
It is of great importance to find an effective approach that not only eliminates gastric cancer cells but also do exhibits significant side effect to normal cells. Some studies have shown the effectiveness of hypericin against cancer cells. In this study, we evaluated the anti-cancer effect of Hypericin in the treatment of gastric cancer. In this study, the AGS cell line was exposed to different concentrations of hypericin for 24 and 48 h. Evaluation of cell death was done by MTT assay. The rate of apoptosis was measured by flow cytometry assay using Annexin V/ Propidium Iodide. The expression rate of Bcl2, p53 and Bax genes was evaluated by Real-time PCR test, and immunocytochemistry (ICC) analysis and western blotting was used for further evaluation of p53. MTT assay test showed that hyepricin induces 50% cell death in the concentration of 1 (µg/mL) and 0.5 (µg/mL) at 24 h and 48 h post-treatment, respectively, however no similar effect seen on fibroblast cells. Annexin/PI test revealed that cell apoptosis after exposure to hypericin for 24 h was 74%. Real-time PCR showed that expression level of Bax, p53 and Bax genes increases and Bcl2 gene decreases in AGS cell lines after treatment by hypericin. ICC analysis and western blotting for p53 confirmed these data. The results of this study indicated that hypericin has the potential to be introduced as an effective treatment for gastric cancer. Therefore, it seems that this substance has potential to be utilized as anti-cancer drug.
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Affiliation(s)
- Misagh Naderi
- Integrative Oncology Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Mahtab Rahmani Cherati
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Ali Mohammadian
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Baghery Bidhendy
- Young Researchers and Elite Club, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.,Clinical Research Development Center, Amir-almomenin Hospital, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Saeedeh Ghiasvand
- Departments of Biology, Faculty of Science, Malayer University, Malayer, Iran
| | - Hadi Zare Marzouni
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hoda Aryan
- Young Researchers and Elite Club, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.,Medical Students' Scientific Association (MSSA), Tehran Medical Sciences Branch, Islamic Azad University Tehran, Iran
| | - Ehsan Jangholi
- Young Researchers and Elite Club, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.,Clinical Research Development Center, Amir-almomenin Hospital, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Amin Javidi
- Integrative Oncology Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
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Xia Y, Yan Z, Wan Y, Wei S, Bi Y, Zhao J, Liu J, Liao DJ, Huang H. Knockdown of long noncoding RNA GHET1 inhibits cell‑cycle progression and invasion of gastric cancer cells. Mol Med Rep 2018; 18:3375-3381. [PMID: 30066922 PMCID: PMC6102745 DOI: 10.3892/mmr.2018.9332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/19/2018] [Indexed: 12/17/2022] Open
Abstract
GHET1 is an oncogenic long noncoding RNA (lncRNA) that promotes the proliferation and invasion of many malignant cell types. However, the function and underlying mechanisms of lncRNA GHET1 in gastric cancer are not fully understood. In this study, the expression of GHET1 was investigated in gastric cancer and it was determined whether GHET1 may potentially be used as a biomarker for the disease. The gastric cancer cell lines MGC‑803 and AGS were transfected with GHET1‑directed small interfering RNA (siRNA) and the changes in phenotype and cell‑cycle‑related molecules were assessed. The downregulation of GHET1 induced G0/G1‑phase arrest in gastric cancer cells and inhibited their proliferation, migration, and invasion. DNA synthesis and the expression of proliferating cell nuclear antigen (PCNA) decreased, which was consistent with the results of the CCK‑8 assay. The levels of specific cell‑cycle regulators were determined and the expression and activities of positive cell‑cycle regulators (cyclin D, CDK4, CDK6, cyclin E, CDK2) were reduced, whereas those of a negative regulator (P21) were increased in GHET1‑knockdown cells. Taken together, the present findings show that the downregulation of GHET1 not only inhibits the migration and invasion of gastric cancer cells, but also inhibits their proliferation, at least in part by upregulating P21 expression and downregulating cyclin and CDK expression to inhibit the G0/G1 to S phase transition. The present findings may provide a potential therapeutic target for gastric cancer.
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Affiliation(s)
- Ying Xia
- Department of Clinical Biochemistry, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Zhiqiang Yan
- Department of Gastrointestinal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Ying Wan
- Department of Clinical Biochemistry, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Sixi Wei
- Department of Clinical Biochemistry, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Ying Bi
- Department of Clinical Biochemistry, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Juanjuan Zhao
- Department of Clinical Biochemistry, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Juanjuan Liu
- Department of Clinical Biochemistry, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Dezhong Joshua Liao
- Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Hai Huang
- Department of Clinical Biochemistry, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
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Binding of the Helicobacter pylori OipA causes apoptosis of host cells via modulation of Bax/Bcl-2 levels. Sci Rep 2017; 7:8036. [PMID: 28808292 PMCID: PMC5556102 DOI: 10.1038/s41598-017-08176-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 07/10/2017] [Indexed: 12/16/2022] Open
Abstract
The H. pylori outer inflammatory protein A (OipA) is an outer membrane protein that contributes to gastric inflammation. OipA is believed to affect intra-cellular signalling and modulate the host signalling pathways. The aim of the current study was to clarify the role of OipA in H. pylori pathogenesis and its effect on host cell signalling pathways. To this end, the oipA gene was isolated and inserted into cloning and expression vectors. The recombinant plasmid was transferred into an expression host to produce OipA, which was subsequently purified by affinity chromatography and used for antibody production. A confluent monolayer of gastric cell lines was treated with various concentrations of OipA and investigated for attachment, toxicity, and apoptosis and alterations in signalling pathways. OipA bound to gastric cell lines confirming its role in the attachment of H. pylori to host cells. The ratio of Bax/Bcl-2 and caspase3, 8, FasL in the host cells were assessed and the results showed that the Bax/Bcl-2 ratio as well as the level of cleaved-caspase 3 was elevated in OipA-treated cells. These findings suggest that OipA can bind and induce toxic events as well as triggering apoptotic cascade in host gastric cells through intrinsic pathway.
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Ma Y, Liu L, Yan F, Wei W, Deng J, Sun J. Enhanced expression of long non-coding RNA NEAT1 is associated with the progression of gastric adenocarcinomas. World J Surg Oncol 2016; 14:41. [PMID: 26911892 PMCID: PMC4765228 DOI: 10.1186/s12957-016-0799-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 02/16/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) are emerging as new players in the cancer. The aim of this study was to examine the abnormalities of NEAT1 (nuclear paraspeckle assembly transcript 1, also known as MENε/β) in gastric adenocarcinomas (GACs). METHODS One hundred thirty-one GAC tissues and matched adjacent normal tissues (ANTs) were collected from patients who undergone surgery. Differences in of NEAT1 expression were examined via quantitative reverse transcriptase PCR (qRT-PCR). WST-1 assay and transwell assay were carried out in vitro to investigate the proliferation and migration of GAC cells with alteration in NEAT1 long non-coding RNA (lncRNA) expression. RESULTS The expression levels of lncRNA NEAT1 were significantly elevated in GAC tissues (P<0.001) compared with ANTs. There was also a statistical difference in NEAT1 expression between early and advanced GACs (P=0.0111). GACs with lymph node metastasis (LNM) expressed higher levels of NEAT1 lncRNA compared with those without LNM (P=0.004). In the in vitro experiments, the proliferation but not migration of GAC cells was attenuated after NEAT1 knockdown by RNA interference. CONCLUSIONS Expression of NEAT1 lncRNA was enhanced in GACs; and NEAT1 may influence GAC progression by promoting tumor growth.
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Affiliation(s)
- Yanling Ma
- Department of Oncology of Zhongshan Hospital, Wuhan University, No. 26 Zhongshan Road, Wuhan, Hubei, 430033, China.
| | - Li Liu
- Department of Oncology of Zhongshan Hospital, Wuhan University, No. 26 Zhongshan Road, Wuhan, Hubei, 430033, China.
| | - Fei Yan
- Department of Oncology of Zhongshan Hospital, Wuhan University, No. 26 Zhongshan Road, Wuhan, Hubei, 430033, China.
| | - Wujie Wei
- Department of Oncology of Zhongshan Hospital, Wuhan University, No. 26 Zhongshan Road, Wuhan, Hubei, 430033, China.
| | - Jie Deng
- Department of Oncology of Zhongshan Hospital, Wuhan University, No. 26 Zhongshan Road, Wuhan, Hubei, 430033, China.
| | - Jianhai Sun
- Department of Oncology of Zhongshan Hospital, Wuhan University, No. 26 Zhongshan Road, Wuhan, Hubei, 430033, China.
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Feng Y, Li L, Zhang X, Zhang Y, Liang Y, Lv J, Fan Z, Guo J, Hong T, Ji B, Ji Q, Mei G, Ding L, Zhang S, Xu X, Ye Q. Hematopoietic pre-B cell leukemia transcription factor interacting protein is overexpressed in gastric cancer and promotes gastric cancer cell proliferation, migration, and invasion. Cancer Sci 2015; 106:1313-22. [PMID: 26211905 PMCID: PMC4638003 DOI: 10.1111/cas.12754] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 07/14/2015] [Accepted: 07/22/2015] [Indexed: 12/15/2022] Open
Abstract
Hematopoietic pre-B cell leukemia transcription factor interacting protein (HPIP) has been shown to play an important role in the development and progression of some cancers. However, the role of HPIP in gastric cancer (GC) is unclear. Here, we show that HPIP is upregulated in most GC patients and promotes GC cell proliferation, migration, and invasion. In GC patients, HPIP positively associates with tumor size and nodal metastasis, and negatively associates with tumor differentiation. Hematopoietic pre-B cell leukemia transcription factor interacting protein increases GC cell proliferation through activation of G1 /S and G2 /M cell cycle transitions, accompanied by a marked increase of the positive cell cycle regulators, including cyclin D1, cyclin A, and cyclin B1. Hematopoietic pre-B cell leukemia transcription factor interacting protein enhances GC cell migration and invasion, and modulates epithelial-mesenchymal transition, which plays a key role in cancer cell migration and invasion. These data underscore the critical role of HPIP in GC cell proliferation and progression and suggest that HPIP inhibition may be a useful therapeutic strategy for GC treatment.
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Affiliation(s)
- Yingying Feng
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
- Department of Colorectal Surgery, the Second Artillery General HospitalBeijing, China
| | - Ling Li
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Xiaomei Zhang
- Department of Gastroenterology and Hepatology, Chinese PLA General HospitalBeijing, China
| | - Yunjing Zhang
- Department of Colorectal Surgery, the Second Artillery General HospitalBeijing, China
| | - Yingchun Liang
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Jinjing Lv
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Zhongyi Fan
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Jing Guo
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Tian Hong
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Beibei Ji
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Quanbo Ji
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Guohui Mei
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Lihua Ding
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Shu Zhang
- Department of Gastrointestinal Oncology, Shandong Cancer Hospital and InstituteJinan, China
| | - Xiaojie Xu
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
| | - Qinong Ye
- Department of Medical Molecular Biology, Beijing Institute of BiotechnologyBeijing, China
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